My own take is that I am quite sure that I will never fully understand all of life's complexities - and I am actually quite content to realize this. If something genuinely perplexes me, I will research it until I understand it to the best of my limited ability.
What I will not do is accept the word of those whose arguments come from personal bias and whose research is limited to one book

The secret to a happy life is lowering your expectations to the point where they are already met